Contact Angle Calculator - Free Online Tool
Calculate your contact angle with our free online tool.
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Frequently Asked Questions
Common questions about the Contact Angle Calculator - Free Online Tool
Surface tension is the force per unit length at a liquid surface, measured in N/m or dyne/cm. Water surface tension is about 72 mN/m at 20°C.
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Sources & References
International System of Units (SI): surface tension
Surface tension is measured in the newton per metre (N/m). Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.
International System of Units (SI)
Authoritative definitions for surface tension, from the BIPM SI Brochure (9th edition), the defining reference for the SI.